General Description
The MAX17100 evaluation kit (EV kit) is a fully assem-
bled and tested surface-mount PCB that provides the
voltages and features required for active-matrix, thin-
film transistor (TFT), liquid-crystal displays (LCDs). The
EV kit contains a high-voltage step-up switching regula-
tor, four high-current op amps, two linear regulators,
two high-voltage switching blocks for gate-driver sup-
ply modulation, a digitally adjustable VCOM calibrator,
and six independent scan drivers.
The EV kit operates from a DC supply voltage of 2.5V to
5.5V. The step-up switching regulator is configured for
a +14V output that provides at least 500mA with an
input voltage of 4.5V to 5.5V. The positive linear regula-
tor is configured for a +25V output providing at least
20mA. The negative linear regulator is configured for a
-10V output providing at least 20mA. The VCOM op
amp is configured for 7V, capable of providing up to
±200mA peak current. The high-voltage, level-shifting
scan driver buffers six logic inputs and shifts them to a
desired level to drive TFT-LCD row logic.
The MAX17100 EV kit provides an on-board I2C inter-
face that can be connected to a host computer through
the universal serial bus (USB) port. The EV kit includes
Windows®2000-, Windows XP®-, and Windows Vista®-
compatible software that provides a graphical user
interface (GUI) for control of the MAX17100’s program-
mable features.
Features
o2.5V to 5.5V Input Range
o4.5V to 5.5V for Full Output Power
o1.2MHz Step-Up Switching Frequency
oOutput Voltages
+14V Output at 500mA (Step-Up Switching
Regulator)
+25V Output at 20mA (Positive Linear Regulator)
-10V Output at 20mA (Negative Linear Regulator)
±200mA High-Current Op-Amp Output
oResistor-Adjustable Switching Regulator and Op-
Amp Output Range
oDigitally Programmable Op-Amp Output Voltage
o+35V to -15V High-Voltage Level-Shifting Drivers
o> 85% Efficiency (Step-Up Switching Regulator)
oOn-Board I2C Interface Control Through USB
oWindows 2000-, Windows XP-, and Windows Vista
(32-Bit)-Compatible Software
oLead(Pb)-Free and RoHS Compliant
oFully Assembled and Tested
Evaluates: MAX17100
MAX17100 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-4706; Rev 0; 7/09
Component List
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Ordering Information
DESIGNATION QTY DESCRIPTION
C1, C5 2
10µF ±20%, 6.3V X5R ceramic
capacitors (0603)
Murata GRM188R60J106M
TDK C1608X5R0J106K
C2, C3, C8, C27 0 Not installed, ceramic capacitors
(0603)
C4, C6 2
2.2µF ±20%, 6.3V X5R ceramic
capacitors (0603)
Murata GRM188R60J225K
TDK C1608X5R0J225M
DESIGNATION QTY DESCRIPTION
C7, C13 2
1µF ±10%, 6.3V X5R ceramic
capacitors (0402)
Murata GRM155R60J105K
TDK C1005X5R0J105K
C9 1
220pF ±10%, 50V X7R ceramic
capacitor (0402)
Murata GRM155R71H221K
Taiyo Yuden UMK105BJ221KW
PART TYPE
MAX17100EVKIT+ EV Kit
Windows, Windows XP, and Windows Vista are registered
trademarks of Microsoft Corp.
+
Denotes lead(Pb)-free and RoHS compliant.
Evaluates: MAX17100
MAX17100 Evaluation Kit
2 _______________________________________________________________________________________
Component List (continued)
DESIGNATION QTY DESCRIPTION
C10, C56 2
0.033µF ±10%, 16V X5R ceramic
capacitors (0603)
Murata GRM188R71C333K
Taiyo Yuden EMK107BJ333KA
C11, C12, C16,
C17, C28, C29,
C41, C48–C53,
C57
14
0.1µF ±10%, 50V X7R ceramic
capacitors (0603)
Murata GRM188R71H104K
TDK C1608X7R1H104K
C14 1
0.22µF ±10%, 6.3V X5R ceramic
capacitor (0402)
Murata GRM155R60J224K
TDK C1005X5R0J224K
C15 1
0.22µF ±10%, 25V X7R ceramic
capacitor (0603)
Murata GRM188R71E224K
TDK C1608X7R1E224K
C18, C19 2
10µF ±20%, 25V X5R ceramic
capacitors (1206)
Murata GRM31CR61E106K
TDK C3216X5R1E106M
C20–C25 6
100pF ±5%, 50V C0G ceramic
capacitors (0402)
Murata GRM1555C1H101J
TDK C1005C0G1H101J
C26 0 Not installed, ceramic capacitor
(1206)
C30 0
Not installed, through-hole OSCON
capacitor
(OSCON-B)
C31 1
0.01µF ±20%, 25V X7R ceramic
capacitor (0402)
Murata GRM155R71E103K
TDK C1005X7R1E103K
C32 1
0.33µF ±10%, 50V X7R ceramic
capacitor (0805)
Murata GRM219R71H334K
TDK C2012X7R1H334K
C33 1
0.47µF ±10%, 25V X5R ceramic
capacitor (0603)
Murata GRM188R71E474K
TDK C1608X5R1E474K
C36–C39, C42,
C44 6
1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C105K
TDK C1608X5R1C105K
DESIGNATION QTY DESCRIPTION
C40, C43, C45 3
10µF ±10%, 16V X5R ceramic
capacitors (0805)
KEMET C0805C106K4PACTU
C46, C47 2
22pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H220J or
TDK C1608C0G1H220J
C54, C55 2
10pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H100J
TDK C1608C0G1H100J
C66–C71 6
4700pF ±10%, 50V X7R ceramic
capacitors (0402)
Murata GRM155R71H472K
TDK C1005X7R1H472K
D1 1
3A, 30V Schottky diode (M-Flat)
Toshiba CMS01
Toshiba CMS02
D2, D3 2
200mA, 100V dual diodes (SOT23)
Fairchild MMBD4148SE
(Top Mark: D4)
C entr al S em i C M P D 7000 Lead Fr ee
(Top Mark: C5C)
D4 1
3A, 30V diode (SMA)
Diodes, Inc. B350A-13-F
Vishay B350A
D5 1 Not installed, 10V diode (SMA)
H1 0 Not installed, 2 x 5-pin JTAG
header
JU1 1 Not installed, 2-pin
header—shorted by PCB
JU2, JU6–JU11,
JU14–JU19 13 3-pin headers
JU12, JU13 0 Not installed, 2-pin headers
L1 1 3.0µH, 3A inductor
Sumida CDRH6D28-3R0
L2 1
Ferrite bead (0603)
TDK MMZ1608R301A
Murata BLM18SG700 TN1
P1 1 USB type-B right-angle PC-mount
receptacle
Q1 1
200mA, 40V pnp transistor (SOT23)
Fairchild MMBT3906_NL
Diodes, Inc. MMBT3906-7-F
Evaluates: MAX17100
MAX17100 Evaluation Kit
_______________________________________________________________________________________ 3
Component List (continued)
DESIGNATION QTY DESCRIPTION
Q2 1
200mA, 40V npn transistor (SOT23)
Fairchild MMBT3904
(Top Mark: 1A)
Central Semi CMPT3094 Lead Free
(Top Mark: C14)
Q3 1
-20V, 0.063Ω p-channel MOSFET
(SC70 PowerPAK)
Vishay SiA443DJ
Vishay SiA411DJ
R1, R28–R31,
R48, R55 7 100kΩ ±1% resistors (0402)
R2, R8, R32,
R33, R34 0 Not installed, resistors (0603)
R3 1 180kΩ ±5% resistor (0402)
R4, R7 2 1kΩ ±5% resistors (0402)
R5, R6, R36 3 100kΩ ±1% resistors (0603)
R9–R14 6 100kΩ ±5% resistors (0402)
R15, R16 2 5.6kΩ ±5% resistors (0603)
R17 1 100kΩ ±5% resistor (0603)
R18, R24 2 6.8kΩ ±5% resistors (0603)
R19 1 191kΩ ±1% resistor (0402)
R20 1 10kΩ ±1% resistor (0402)
R21 1 27kΩ ±5% resistor (0603)
R22 31.6kΩ ±1% resistor (0402)
R23 1 324kΩ ±1% resistor (0402)
R25 1 24.9kΩ ±1% resistor (0402)
R26, R27 2 200kΩ ±1% resistors (0402)
R35 1 169kΩ ±1% resistor (0603)
R37, R38 2 27Ω ±5% resistors (0603)
R39 1 1.5kΩ ±5% resistor (0603)
R40 1 2.2kΩ ±5% resistor (0603)
R41 1 470Ω ±5% resistor (0603)
R42 1 10kΩ ±5% resistor (0603)
R43–R47 0 Not installed, resistors—shorted by
PCB trace (0402)
DESIGNATION QTY DESCRIPTION
R49–R54,
R61–R66 12 100Ω ±5% resistors (1206)
R56 1 137kΩ ±1% resistor (0402)
R57 1 13.3kΩ ±1% resistor (0402)
R58, R59, R60 3 0Ω resistors (0603)
SW1 1 6-position low-profile surface-mount
DIP switch
U1 1
Internal-switch boost regulator
(48 TQFN-EP*)
Maxim MAX17100ETM+
U2 1 Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
U3 1 2.5V LDO regulator (5 SO70)
Maxim MAX8511EXK25+
U4 1
Adjustable output LDO regulator
(5 SC70)
Maxim MAX8512EXK+
U5 1
UART-to-USB converter
(32 TQFP, 7mm x 7mm)
FTDI FT232BL
U6 1
93C46A type (64k x 16) 3-wire
EEPROM (8 SO)
Atmel AT93C46EN-SH-B
U7, U8 2 Logic-level translators (10 µMAX®)
Maxim MAX1840EUB+
U9 1
3.3V LDO (5 SOT23)
Maxim MAX8887EZK33+
(Top Mark: ADPZ)
Y1 1 16MHz crystal
Y2 1 6MHz crystal
—13
Shunts
Digi-Key S9000-ND or equivalent
—1P C B: M AX 17100 E V ALU ATION KIT+
*
EP = Exposed pad.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
Evaluates: MAX17100
Quick Start
Recommended Equipment
• 2.5V to 5.5V, 3A DC power supply
• User-supplied Windows 2000, Windows XP, or
Windows Vista PC with a spare USB port
• Voltmeter
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and
underlined refers to items from the Windows operating
system.
Procedure
The MAX17100 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Verify that a shunt is installed across pins 2-3 of
jumper JU2.
2) Connect the positive terminal of the power supply to
the VS pad. Connect the negative terminal of the
power supply to the PGND pad closest to VS.
3) Turn on the power supply and verify that the step-
up switching regulator output (VMAIN) is +14V.
4) Verify that the positive linear regulator supply
(VGHON) is approximately +25V.
5) Verify that the negative linear regulator supply
(VGOFF) is approximately -10V.
6) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the MAX17100 EV kit soft-
ware, MAX17100Rxx.ZIP. Save the EV kit software
to a temporary folder and uncompress the ZIP file.
7) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the tempo-
rary folder. The program files are copied and icons
are created in the Windows Start | Programs
menu.
8) Connect the USB cable from the PC to the EV kit
board. A Building Driver Database window pops
MAX17100 Evaluation Kit
4 _______________________________________________________________________________________
Component Suppliers
SUPPLIER PHONE WEBSITE
Central Semiconductor Corp. 631-435-1110 www.centralsemi.com
Diodes, Inc. 805-446-4800 www.diodes.com
Fairchild Semiconductor 888-522-5372 www.fairchildsemi.com
KEMET Corp. 864-963-6300 www.kemet.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
Sumida Corp. 847-545-6700 www.sumida.com
Taiyo Yuden 800-348-2496 www.t-yuden.com
TDK Corp. 847-803-6100 www.component.tdk.com
Toshiba America Electronic
Components, Inc. 949-623-2900 www.toshiba.com/taec
Vishay 402-563-6866 www.vishay.com
MAX17100 EV Kit Files
FILE DESCRIPTION
INSTALL.EXE Installs the EV kit files on your computer
MAX17100.EXE Application program
FTD2XX.INF USB device driver file
UNINST.INI Uninstalls the EV kit software
TROUBLESHOOTING_USB.PDF USB driver installation help file
Note: Indicate that you are using the MAX17100 when contacting these component suppliers.
up in addition to a New Hardware Found message
when installing the USB driver for the first time. If you
do not see a window that is similar to the one
described above after 30s, remove the USB cable
from the board and reconnect it. Administrator privi-
leges are required to install the USB device driver
on Windows 2000, Windows XP, and Windows Vista.
9) Follow the directions of the Add New Hardware
Wizard to install the USB device driver. Choose the
Search for the best driver for your device option.
Specify the location of the device driver to be
C:\Program Files\MAX17100 (default installation
directory) using the Browse button. During device
driver installation, Windows may show a warning
message indicating that the device driver Maxim
uses does not contain a digital signature. This is not
an error condition and it is safe to proceed with instal-
lation. Refer to the TROUBLESHOOTING_USB.PDF
document included with the software for additional
information.
10) Start the MAX17100 EV kit software by opening its
icon in the Start | Programs menu.
11) Normal device operation is verified when MAX17100
Device Connected is displayed in the status bar on
the MAX17100 EV kit main window (Figure 1).
12) Verify that the output of the high-speed op amp
(VCOM) is approximately 4V.
Detailed Description of Hardware
The MAX17100 EV kit contains a high-voltage step-up
switching regulator, four high-current op amps, two lin-
ear regulators, two MLG blocks for gate-driver supply
modulation, a digitally adjustable VCOM calibrator, and
six independent scan drivers. The EV kit operates from
a DC power supply between 2.5V and 5.5V that pro-
vides at least 3A.
As configured, the step-up switching regulator (VMAIN)
generates a +14V output and provides at least 500mA
with input voltage of 4.5V to 5.5V. The step-up switch-
ing-regulator output voltage can be adjusted up to 18V
with different feedback resistors (see the
Output-
Voltage Selection
section). Jumper JU1 is provided for
current measurement.
The op-amp output (VCOM) is set to 7V and can source
or sink peak current up to 200mA. The output can be
reconfigured to other voltages with voltage-divider
resistors (see the
Output-Voltage Selection
section).
The six logic-level to high-voltage level-shifting buffers
can buffer six logic inputs and shift them to a desired
level to drive TFT-LCD row logic. The buffers’ output is
connected to GOFF when their respective input is
Evaluates: MAX17100
MAX17100 Evaluation Kit
_______________________________________________________________________________________ 5
Figure 1. MAX17100 EV Kit Software Main Window
Evaluates: MAX17100
logic-low. When their input logic is high, STH1 and
STH2 output is connected to GHON; CKH1 and CKBH1
output is connected to GHC1; CKH2 and CKBH2 out-
put is connected to GHC2. GHC1 and GHC2 are the
output of the two high-voltage switching blocks.
The six switches within SW1 select logic levels on
inputs ST1, ST2, CK1, CKB1, CK2, and CKB2 for test-
ing purposes. Set each switch open when driving the
inputs with external logic. Jumpers JU14–JU19 are
used to select between capacitive loads on the outputs
for testing purposes.
IN Power Supply (JU2)
The MAX17100 IN pin can be supplied directly from the
VS pad or from an on-board linear regulator through
configuration of jumper JU2. See Table 1 for jumper
JU2 configuration.
Level-Shifter Logic-Level Inputs
(JU6–JU11)
The MAX17100 level-shifter inputs can be supplied
using the on-board logic or from an externally applied
signal through configuration of jumpers JU6–JU11.
Additionally, when using on-board logic, SW1 controls
the logic levels based on its own settings. When SW1 is
on, the logic input is high. When SW1 is off, the logic
input is pulled low through a 100kΩpulldown resistor.
See Table 2 for jumper configuration.
Level-Shifter Output Loading (JU14–JU19)
The MAX17100 EV kit incorporates jumpers JU14–JU19
to provide loading options at the level-shifter outputs
(STH1, STH2, CKH1, CKBH1, CKH2, and CKBH2). See
Table 3 for jumper configuration.
Output-Voltage Selection
The MAX17100 EV kit’s step-up switching-regulator out-
put (VMAIN) is set to +14V by feedback resistors R56
and R57. To generate output voltages other than +14V,
select different external voltage-divider resistors, R56
and R57. Note that changing the VMAIN voltage setting
changes the VGOFF and VGHON charge-pump output
voltages. Refer to the
Step-Up Regulator, Output-
Voltage Selection
section in the MAX17100 IC data
sheet for more information.
Detailed Description of Software
The MAX17100 device includes a calibrator used for
adjusting an LCD’s backplane voltage (VCOM) in TFT-
LCD displays. The VCOM voltage is adjusted by con-
trolling the amount of sink current drawn by the
calibrator. This is accomplished by programming the
desired setting into the device’s 7-bit internal DAC. The
software also facilitates reading of the device and pro-
gramming of the device’s internal nonvolatile memory.
Refer to the MAX17100 IC data sheet for further details.
Loading 7-Bit DAC Setting
The DAC setting corresponds to a certain sink-current
level, which in turn corresponds to a specific VCOM
voltage. With the MAX17100 EV kit software, the
device’s 7-bit internal DAC is configured by entering an
appropriate DAC setting into the Load DAC edit box.
The DAC setting can be set from 0x00 (VCOMMAX) to
0x7F (VCOMMIN). The DAC setting is written to the
device by pressing the Load DAC button (Figure 1).
Reading 7-Bit DAC
The MAX17100 7-bit DAC can be read by pressing the
Read DAC button or by checking the DAC polling
checkbox. When checked, the software continuously
reads and displays the DAC’s current setting.
Programming Nonvolatile Memory
The current DAC setting can be programmed into the
device’s internal nonvolatile memory by pressing the
Program button. Each time the device is powered-on,
the DAC is loaded with the setting stored in the
device’s nonvolatile memory. Programming is only pos-
sible when GON is greater than 16V and WR# is low.
MAX17100 Evaluation Kit
6 _______________________________________________________________________________________
SHUNT
POSITION IN PIN
1-2 Powered directly through VS input
2-3* Powered through 3.3V LDO (U9)
Table 1. Jumper JU2 Functions
*
Default position.
SHUNT
POSITION LEVEL-SHIFTER OUTPUT PINS
1-2 Minimum loading
2-3* Maximum loading
Table 3. Jumper JU14-JU19 Functions
*
Default position.
SHUNT
POSITION LEVEL-SHIFTER INPUT PINS
1-2 Supplied through external signal applied at the
SCAN_IN pad
2-3* Supplied on-board based on SW1 states
Table 2. Jumper JU6–JU11 Functions
*
Default position.
Simple SMBus Commands
There are two methods for communicating with the
MAX17100, through the MAX17100 EV kit software
main window (Figure 1), or through the interface win-
dow available by selecting the Action | Interface
Diagnostic Window menu item from the menu bar. The
Maxim command module interface window (Figure 2)
includes a 2-wire interface tab that allows for execu-
tion of the SMBusSendByte(), SMBusReceiveByte(),
and SMBusQuick() commands. See Table 4 for details
regarding SMBus commands.
The Command byte combo box accepts numeric data
in binary, decimal, or hexadecimal. Hexadecimal num-
bers should be prefixed by $ or 0x. Binary numbers
must be exactly eight digits. See Figure 2 for an illustra-
tion of this tool.
Evaluates: MAX17100
MAX17100 Evaluation Kit
_______________________________________________________________________________________ 7
Figure 2. Command Module Interface Window
CONTROL SMBus COMMAND FORMAT
Load DAC SMBusSendByte Input the desired 7-bit DAC setting into the Command byte combo box. The 7-bit
DAC value should be stored in the upper 7 bits (b7–b1) of the byte, with the LSB = 1.
Read DAC SMBusReceiveByte Receives 8 bits from the device. The upper 7 bits correspond to the current DAC
setting and the LSB = 0.
Device search SMBusQuick Search for device address shown in the Target Device Address combo box. The
MAX17100 device address can be 50, 52, 54, or 56.
Table 4. SMBus Commands
Evaluates: MAX17100
MAX17100 Evaluation Kit
8 _______________________________________________________________________________________
Figure 3a. MAX17100 EV Kit Schematic (Sheet 1 of 3)
Evaluates: MAX17100
MAX17100 Evaluation Kit
_______________________________________________________________________________________ 9
Figure 3b. MAX17100 EV Kit Schematic (Sheet 2 of 3)
Evaluates: MAX17100
MAX17100 Evaluation Kit
10 ______________________________________________________________________________________
Figure 3c. MAX17100 EV Kit Schematic (Sheet 3 of 3)
Evaluates: MAX17100
MAX17100 Evaluation Kit
______________________________________________________________________________________ 11
Figure 4. MAX17100 EV Kit Component Placement Guide—Component Side
Evaluates: MAX17100
MAX17100 Evaluation Kit
12 ______________________________________________________________________________________
Figure 5. MAX17100 EV Kit PCB Layout—Component Side
Evaluates: MAX17100
MAX17100 Evaluation Kit
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________
13
© 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Figure 6. MAX17100 EV Kit PCB Layout—Solder Side
